Powerful 7.8 earthquake hits Alaska isles, tsunami possible

A powerful 7.8 earthquake has struck the Alaska Peninsula and a tsunami warning has been issued.

The U.S. Geological Survey showed that the 7.8 magnitude quake struck Tuesday at about 11:12 p.m. PST. It had a depth of 6 miles (9.6 kilometres) and was centred 60 miles (96 kilometres) south-southeast of Perryville, Alaska.

The tsunami warning was issued for South Alaska, the Alaska Peninsula and the Aleutian Islands.

According to the Pacific Tsunami Warning Center,  the alarm for South Alaska and the Alaska Peninsula is from Kennedy Entrance to Unimak. Along with the Aleutian Islands, it is from Unimak Pass to Samalga Pas.

A tsunami advisory was posted for some areas nearby.

The centre announced for other U.S. and Canadian Pacific coasts in North America, there is no tsunami threat.